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Did you know?
The horizontal fraction bar was introduced by the Arabs.
Did you know?
On average, the stomach produces 2 L of hydrochloric acid per day.
Did you know?
It is believed that humans initially contracted crabs from gorillas about 3 million years ago from either sleeping in gorilla nests or eating the apes.
Did you know?
Multiple sclerosis is a condition wherein the body's nervous system is weakened by an autoimmune reaction that attacks the myelin sheaths of neurons.
Did you know?
Anti-aging claims should not ever be believed. There is no supplement, medication, or any other substance that has been proven to slow or stop the aging process.
![The mandrill (Mandrillus sphinx) is a primate of the Old World monkey (Cercopithecidae) family,[3] c](https://biology-forums.com/gallery/47/medium_12359_08_06_12_5_05_05.jpeg)
